Range Extender, Drive and Motor Vehicle

• US 20130300126A1
• Filed: 05/09/2013
• Published: 11/14/2013
• Est. Priority Date: 05/10/2012
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH, Samsung SDI Company Limited
• Original Assignee: Robert Bosch GmbH, Samsung SDI Company Limited
• Inventors: Butzmann, Stefan
• Granted Patent: US 9,127,592 B2
• Time in Patent Office: Days
• US Class Current: 290/1.A
• CPC Class Codes: B60K 6/00 Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units arrangement or mounting in vehicles of electrical gearing, in which an electrical machine serves only as reduction gearing and not as the prime mover and in which no electrical storing means are used B60K17/12; control and regulation of purely electrical prime movers B60L; prime-movers comprising electrical and internal combustion motors in a common engine block or housing per se F02B65/00; electric motors or motor-generators used for starting the combustion engine F02N11/04; electric motors for synchronising gearing F16H3/12 Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
• CPC Class Codes: B60L 15/007 Physical arrangements or structures of drive train converters specially adapted for the propulsion motors of electric vehicles
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2240/527 Voltage
• CPC Class Codes: B60L 2240/529 Current
• CPC Class Codes: B60L 50/61 by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
• CPC Class Codes: B60W 10/00 Conjoint control of vehicle sub-units of different type or different function for propulsion of purely electrically-propelled vehicles with power supplied within the vehicle B60L50/00 - B60L58/00
• CPC Class Codes: F02B 63/04 for electric generators
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility
• CPC Class Codes: Y10S 903/903 having energy storing means, e.g. battery, capacitor

Abstract

The disclosure relates to a range extender for a hybrid vehicle configured to be driven by an electric machine. The range extender includes a generator configured to generate electrical energy, an internal combustion engine configured to drive the generator which generates a number N of generator output voltages, and an N-phase rectifier configured to rectify the number N of generator output voltages to form a rectified output voltage. The range extender further includes a direct voltage converter configured to convert the rectified output voltage of the generator.

Claims

1. A range extender for a hybrid vehicle configured to be driven by an electric machine comprising:

a generator configured to generate a number N of generator output voltages;

an internal combustion engine configured to drive the generator; and

an N-phase rectifier configured to rectify the number N of generator output voltages to form a rectified output voltage; and

a direct voltage converter configured to convert the rectified output voltage of the N-phase rectifier.

2. The range extender according to claim 1, further comprising:

a current sensor configured to sense a rectified output current of the N-phase rectifier; and

a regulator configured to regulate the direct voltage converter as a function of the sensed rectified output current such that a constant output current flows from the direct voltage converter.

3. The range extender according to claim 1, wherein the direct voltage converter includes a step-down converter.

4. A drive for a hybrid vehicle, comprising:

a controlled battery including a number N of battery lines configured to make available an N-phase alternating voltage;

a first electric machine configured to drive the hybrid vehicle, wherein the N-phase alternating voltage is electrically coupled to the first electric machine; and

a range extender including (i) a generator configured to generate a number N of generator output voltages, (ii) an internal combustion engine configured to drive the generator, (iii) an N-phase rectifier configured to rectify the number N of generator output voltages to form a rectified output voltage, and (iv) a direct voltage converter configured to convert the rectified output voltage of the N-phase rectifier,

wherein the range extender is configured to charge the number N of battery lines in an alternating fashion.

5. The drive according to claim 4, further comprising:

N diodes,

wherein for each battery line of the number N of battery lines one diode of the N diodes is connected to a respective battery line of the number N of battery lines and to the range extender, and

wherein the N diodes are connected in such a way that the number N of battery lines can be charged.

6. The drive according to claim 4, further comprising:

N semi-conductor switches,

wherein for each battery line of the number N of battery lines one semi-conductor switch of the N semi-conductor switches is connected to a respective battery line of the number N of battery lines and to the range extender, and

wherein the semiconductor switches are configured to be switched in such a way that they connect a predetermined battery line of the number N of battery lines to the range extender.

7. The drive according to claim 4, wherein the direct voltage converter is configured to generate a predetermined output current.

8. The drive according to claim 4, wherein N is equal to three.

9. A hybrid motor vehicle comprising:

a drive including

a controlled battery including a number N of battery lines configured to make available an N-phase alternating voltage,

a first electric machine configured to drive the hybrid vehicle, wherein the N-phase alternating voltage is electrically coupled to the first electric machine, and

a range extender including (i) a generator configured to generate a number N of generator output voltages, (ii) an internal combustion engine configured to drive the generator, (iii) an N-phase rectifier configured to rectify the number N of generator output voltages to form a rectified output voltage, and (iv) a direct voltage converter configured to convert the rectified output voltage of the N-phase rectifier,

wherein the range extender is configured to charge the number N of battery lines in an alternating fashion.